Something is wrong with the XAMPP installation
I get the above message when typing in: file:///C:/xampp/htdocs/index.php
In my XAMPP control panel, everything is running properly I believe.
I can not access any pages (php) and when trying to type in http://localhost/phpinfo.php, I end up with the browser (firefox).
I do get a page when I type: file:///C:/xampp/htdocs/index.html